[BNAWX] Severe Storm Outlook Narrative

EMWIN Server emwin at nashvilleweather.net
Sat Mar 30 13:55:06 CDT 2019


ACUS11 KWNS 301854
SWOMCD
SPC MCD 301854
KYZ000-INZ000-TNZ000-ILZ000-MOZ000-302100-

Mesoscale Discussion 0249
NWS Storm Prediction Center Norman OK
0154 PM CDT Sat Mar 30 2019

Areas affected...Western/central Kentucky...northwestern
Tennessee...and far southern Indiana

Concerning...Severe potential...Watch possible

Valid 301854Z - 302100Z

Probability of Watch Issuance...40 percent

SUMMARY...Convection has increased in the general vicinity of
Paducah, Kentucky over the past 15-30 minutes, with hail and gusty
winds possible as storms migrate east.  Convective trends are being
monitored for any evolving wind threat, which may necessitate a WW
issuance.

DISCUSSION...An uptick in convection has been noted across portions
of far western Kentucky near the Ohio River over the past 15-30
minutes or so.  This increase is likely tied to ascent and cooling
aloft associated with an upstream mid-level wave and associated jet
streak centered over Missouri.  These storms are in an environment
characterized by modest surface-based instability (500-750 J/kg) and
strong deep shear (50-65 kts) favoring continued organization.  The
favorable wind fields and forcing may overcome relatively weak
instability and support damaging wind gusts - especially if storms
can grow upscale into linear segments as they propagate eastward.  A
brief/isolated tornado cannot be ruled out, although veering
low-level flow with time should mitigate this threat.

..Cook/Grams.. 03/30/2019

...Please see www.spc.noaa.gov for graphic product...

ATTN...WFO...LMK...OHX...PAH...MEG...

LAT...LON   36668649 36018804 35888916 36018963 36228972 36628956
            37278888 37648825 38068737 38478640 38568598 38498556
            38228529 37898526 37548544 37218566 36668649
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